Yeah, you need the book to finish the quest which is the naked dance. Without it, there's not much you can do. Ok, let me start a new file point and I will try to share that sometime this week.
Yeah because after Jasmine refuses the dance or refuses to get completely naked, once you sleep, Amandine will wake you up and tell you that Amelia has a dancing book. After that, you go to Amelia's office in which it would play a scene concluding with you getting the book.
